The appliance power ratings shown below are indicative only. We’ve used the highest that we could find for popular household appliances.
Electrical power is measured in watts, W, a unit of power. Electrical current is measured in amps, A, the rate at which it flows.
|Domestic Portable Appliance||Amps Used||Watts Used|
|Satellite TV box||<0.5||30|
|Computer, including monitor||3.0||600|
|Television 42″ HD||0.5||120|
|Radiator (oil filled)||13.0||3000|
- The fuse in a plug is a safety device designed to protect the lead rather than the appliance. It is a deliberate weak link in a circuit which will ‘blow’ if an electrical appliance or extension lead draws too much current due to either an overload or a fault. The blown fuse cuts off the electricity to stop the lead and appliance from overheating and causing a fire.
- Appliances meeting the relevant product safety standards will always be fitted with a plug having a correctly-rated fuse. If you have to replace a fuse, it’s essential, having checked and corrected the reason for the fuse blowing, to replace it only with another of the same rating.
- As a rule of thumb, fuses are rated according to the power rating of the appliance. Plugs for appliances rated up to about 700 watts should have a 3 amp fuse (coloured red). Plugs for appliances rated between about 700 watts and 3000 watts (the maximum rating of a wall socket) should be fitted with a 13 amp fuse (coloured brown). (Some older appliances were fitted with 5 amp fuses (coloured black), which are still available to buy.)